Let's get this math done. We have 822 and we're going to multiply it by 12. This is the same as taking 822 and adding it to itself 12 times.
Step 1: 0 + 822 = 822
Step 2: 822 + 822 = 1644
Step 3: 1644 + 822 = 2466
Step 4: 2466 + 822 = 3288
Step 5: 3288 + 822 = 4110
Step 6: 4110 + 822 = 4932
Step 7: 4932 + 822 = 5754
Step 8: 5754 + 822 = 6576
Step 9: 6576 + 822 = 7398
Step 10: 7398 + 822 = 8220
Step 11: 8220 + 822 = 9042
Step 12: 9042 + 822 = 9864

So, 822*12 = 9864